DMD50 Universal Satellite Modem
Technical Specifications
TM118 – Rev. 1.1
7-1
Technical Specifications
7
7.0 Data Rates
Refer to Section 7.17.
7.1 Modulator
Modulation
BPSK, QPSK, and OQPSK (8PSK, 16QAM Optional)
IF Tuning Range
50 to 90, 100 to 180 MHz in 1 Hz Steps
L-Band Tuning Range
950 to 2050 MHz in 1 Hz Steps
Impedance
IF, 75-Ohm (50-Ohm Optional)
L-Band,
50-Ohm
Connector BNC,
75-Ohm
SMA, 50-Ohm, L-Band
Return Loss
IF, 1.5:1 Minimum
L-Band, 2.0:1 Minimum
Output Power
0 to -25 dB
Output Stability
±0.5 dB Over Time and Temperature
Output Spectrum
Meets IESS 308/309/310 Power Spectral Mask
Spurious
-55 dBc In-Band (50 to 90 MHz, 100 to 180 MHz,
950 to 2050 MHz)
-45 dBc Out-of-Band
On/Off Power Ratio
>60 dB
Scrambler
CCITT V.35 or IBS (Others Optional)
FEC
Viterbi 1/2, 3/4 and 7/8
DVB Viterbi 1/2, 2/3, 3/4, 5/6, 7/8
Sequential 1/2, 3/4, 7/8 (optional)
Trellis
2/3
DVB PTCL 2/3, 5/6, 8/9, 3/4, 7/8
Turbo Product Code (Optional)
BPSK
21/44
QPSK/OQPSK 1/2, 3/4, 7/8 <20Mbps
QPSK/OQPSK .750, .875 >20Mbps
8PSK/16QAM 3/4, 7/8 <20Mbps
8PSK/16QAM .750, .875 >20Mbps
Legacy Turbo Rates: 0.495, 0.793
Outer Encoder Options
Reed-Solomon INTELSAT (DVB Optional, Custom
Rates Optional)
Data Clock Source
Internal, External, Rx Recovered
Internal Stability
1 x 10
-6
Typical (Optional to 5 x 10
-8
)
Summary of Contents for DMD50
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Page 20: ...DMD50 Universal Satellite Modem Introduction TM118 Rev 1 1 1 3...
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Page 27: ...Installation DMD50 Universal Satellite Modem 2 6 TM118 Rev 1 1...
Page 53: ...Theory of Operation DMD50 Universal Satellite Modem 3 26 TM118 Rev 1 1...
Page 97: ...User Interfaces DMD50 Universal Satellite Modem 4 44 TM118 Rev 1 1...
Page 122: ...DMD50 Universal Satellite Modem Rear Panel Interfaces TM118 Rev 1 1 5 25...
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Page 132: ...DMD50 Universal Satellite Modem Maintenance and Troubleshooting TM118 Rev 1 1 6 9...
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Page 162: ...DMD50 Universal Satellite Modem Appendix A TM118 Rev 1 1 A 3...
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